1. Used for the use of small degrees of concomitant strabismus.
2. Used for paralytic strabismus with diplopia or extraocular muscle dysfunction caused by trauma. 3. Used for undercorrection or overcorrection after strabismus surgery, especially for those with diplopia. 4. Used for small degree paralytic strabismus, especially those with head position. 5. Fields of use: Optometry Center, Eye Hospital, Visual Inspection, Youth Health Care, School Laboratory.